By the way, this is what happened in Voronezh when the tram network there was completely cut out. It has become easier for the city authorities, but you can see for yourself what the result is.
Photo from mosaic.ru
And here’s another comparative reason why minibuses are bad and wild in the dense traffic of a large city. Jimborobin once asked me.
There are simply more traffic jams with minibuses.

So a large modern city is a developed municipal transport system in the form of large buses and trams on dedicated lanes, which runs on a schedule and is comfortable. This is one of the ways to solve traffic jams.